Free VHDL or Verilog Simulator

[Abby Brown]

Hi,

Altera's Quartus II does not include a free simulator. Is there
a free VHDL or Verilog simulator that is reasonalbly good?
Google shows a few but I would prefer a recommendation.

Thanks,
Gary

 

[Patrick Maupin]

On Mar 29, 3:22 pm, "Abby Brown" <abbybr...@charter.net> wrote:

Hi,

Altera's Quartus II does not include a free simulator.  Is there
a free VHDL or Verilog simulator that is reasonalbly good?
Google shows a few but I would prefer a recommendation.

Thanks,
Gary

Icarus is great.

Also, if you have heavy-duty sims that take a lot of time, and don't
mind doing a little test jig coding in C or C++, verilator is great
and fast (but it is only a 2 state simulator, not a 4 state
simulator).

Regards,
Pat

 

[Alan Fitch]

On 29/03/10 21:22, Abby Brown wrote:

Hi,

Altera's Quartus II does not include a free simulator. Is there
a free VHDL or Verilog simulator that is reasonalbly good?
Google shows a few but I would prefer a recommendation.

Thanks,
Gary

Depends what you mean by "include" - you can download a completely free
version of Modelsim from the Altera Website,

regards
Alan

--
Alan Fitch

 

[Abby Brown]

Altera's Quartus II does not include a free simulator. Is
there
a free VHDL or Verilog simulator that is reasonalbly good?
Google shows a few but I would prefer a recommendation.

Depends what you mean by "include" - you can download a
completely free
version of Modelsim from the Altera Website,
Alan Fitch

Good. That appears to be brand new. Last time I looked
Modelsim was available only with a subscription. My bdf to C#
generator is now working but Modelsim is a backup.

Thanks,
Gary

 

[Jeff Cunningham]

On 4/2/10 11:30 AM, Abby Brown wrote:

Altera's Quartus II does not include a free simulator. Is
there
a free VHDL or Verilog simulator that is reasonalbly good?
Google shows a few but I would prefer a recommendation.

Depends what you mean by "include" - you can download a
completely free
version of Modelsim from the Altera Website,
Alan Fitch

Good. That appears to be brand new. Last time I looked
Modelsim was available only with a subscription. My bdf to C#
generator is now working but Modelsim is a backup.

The free versions of Modelsim have been available for years (also
through xilinx - look for "starter edition") but are really usable for
small designs. Once your design goes over a certain number of statements
(I think 500 or something like that) execution slows to a crawl.

-Jeff

 

[whygee]

Jeff Cunningham wrote:

The free versions of Modelsim have been available for years (also
through xilinx - look for "starter edition") but are really usable for
small designs. Once your design goes over a certain number of statements
(I think 500 or something like that) execution slows to a crawl.

there are also free (as free beer or as a gnu) simulators for VHDL :
http://symphonyeda.com/ quite nice
http://ghdl.free.fr/ quite awesome in certain aspects
(yes i'm biased because I use it and it can do things others can't)

-Jeff
yg

--
http://ygdes.com / http://yasep.org

 

[pini_45]

Jeff Cunningham wrote:
The free versions of Modelsim have been available for years (also
through xilinx - look for "starter edition") but are really usable for
small designs. Once your design goes over a certain number of statement

(I think 500 or something like that) execution slows to a crawl.

there are also free (as free beer or as a gnu) simulators for VHDL :
http://symphonyeda.com/ quite nice
http://ghdl.free.fr/ quite awesome in certain aspects
(yes i'm biased because I use it and it can do things others can't)

-Jeff
yg

--
http://ygdes.com / http://yasep.org

I have used icarus and GHDL and found them okay for small designs. I use
it to model sparse memory (VPI for icarus verilog).
The work was posted at:
h---://bknpk.no-ip.biz/my_web/MiscellaneousHW//memory_hdl_models.html



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[pini_kr]

Hi,

Altera's Quartus II does not include a free simulator. Is there
a free VHDL or Verilog simulator that is reasonalbly good?
Google shows a few but I would prefer a recommendation.

Thanks,
Gary

Use GHDL for VHDL. I used it. It can also simulate a post NGD VHD
net-list. It supports also c interface.
http://bknpk.ddns.net/my_web/IP_STACK/start_1.html

"...andom generation using c code and VHPI..."
http://bknpk.ddns.net/my_web/SDIO/ip_ttl_filter_d_b_packets_rand.html


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[mnentwig]

Icarus is great.
+1. And, gtkwave, regardless of the simulator.

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